The buf in rl6347a_hw_read is __be32.

Cc: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: NBard liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>